Examples with ITextViewerExtension6 org.eclipse.jface.text.ITextViewerExtension6 used on opensource projects

Example 6 with ITextViewerExtension6

use of org.eclipse.jface.text.ITextViewerExtension6 in project xtext-eclipse by eclipse.

the class LinkedEditingUndoSupport method undoDocumentChanges.

public void undoDocumentChanges() {
    final ISourceViewer viewer = editor.getInternalSourceViewer();
    try {
        editor.getSite().getWorkbenchWindow().run(false, true, new IRunnableWithProgress() {

            @Override
            public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
                if (viewer instanceof ITextViewerExtension6) {
                    IUndoManager undoManager = ((ITextViewerExtension6) viewer).getUndoManager();
                    if (undoManager instanceof IUndoManagerExtension) {
                        IUndoManagerExtension undoManagerExtension = (IUndoManagerExtension) undoManager;
                        IUndoContext undoContext = undoManagerExtension.getUndoContext();
                        IOperationHistory operationHistory = OperationHistoryFactory.getOperationHistory();
                        while (undoManager.undoable()) {
                            if (startingUndoOperation != null && startingUndoOperation.equals(operationHistory.getUndoOperation(undoContext)))
                                return;
                            undoManager.undo();
                        }
                    }
                }
            }
        });
        syncUtil.waitForReconciler(editor);
    } catch (InterruptedException e) {
        // cancelled by user, ok
        return;
    } catch (Exception e) {
        LOG.error(e.getMessage(), e);
    }
}